Bobbin former



J. L. LYLE Noir. 21, 1933.

BOBBIN FORMER Filed Feb. 25, 1932 2 Sheets-Sheet 2 Patented Nov. 21, 1933 UNITE@ STATES` PATENT Y oFFics Claims.

This invention relates to a bobbin former designed primarily for use with a bunch builder such as shown, for example, in Patent 1,797,353 issued vto me on March 24, 1931.

5 In the patent referred to there has been disclosed a bcbbin former joined to the bunch builder by a Vbuilder chain :but the construction of said former has been undesirable because of the number of parts required and the consequent 10. danger ci getting out of order.

It is an object of the present invention to provide a bobbin former which can be constructed at much lower cost than other devices used for the same purpose, can be more easily installed and adl5` justed than heretofore, and will operate just as effectively as other types of bobbin formers.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details or" construc-Y tion hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope oi what is claimed without departing from the spirit o1 the invention.

In the accompanying' drawings the preferred forms of the invention have been shown.

Tn said drawings:

.Figure 1 is a front elevation of the bobbin former showing combined therewith a bunch builder of the type disclosed in my patent heretofore identied.

Figure 2 is an elevation of one side of the bunch builder disclosed in my patent, the cams used in connection therewith being indicated by broken lines and the builder chain being removed,

Figure 3 is an elevation of a portion of the opposite side of the bunch builder.

Figure 4 is an elevation of the bobbin former on an enlarged scale, the adjacent portions of the builder chain being shown.

Figure 5 is a plan view of the bobbin former.

Figure 6 is a section on line 6 6, Figure 5.

Figure .7 is an elevation of the periphery of the former, the'chains being removed.

Figure 8 is an elevation of a modied form of the device. l

Figure 9 isan elevation of another nfiodification thereof.

Figure 10 is an elevation of 'a bobbin such as builder one end of which is connected to thebase of a spinning frame (not shown) by means ofv the main bearing axle 2 located near one end of the builder arzn. ThusA the said builder arm takes the form of a lever having a long arm and a short arm, there being an extensive arm 3 pivotally connected tothe short arm and carrying a counterbalance l adjustably mounted and adapted to be held against vsliding movement by a set screw 5 or the like. The extension arm 3 65 can be adjusted angularly relative to the builder arm 1 by means of a screw 6 extending through a lug 7 extending laterally from the short end of the builder arm, this screw constituting a support for the extension arm 3 as shown partic- 70 ularly in Figure 2.

One side oi the builder arm 1 is `formed with a longitudinal groove 8 constituting means for retaining and guiding a slide 9 along one 1ongitudinal edge of which are arranged rack teeth lo.' One end of the slide can beprovided with an adjustable stop screw 11 adapted to limit the movement of the slide 9 toward the axle 2. A pulley 12 is mounted on the builder arm 1 neary that end thereof remote from the axle 2 while 80 another pulley 13 is mounted on the slide 9. -A longitudinal shaft 111 is journaled in bearings 15 provided therefor on the lower portion of the builder arm 1A and secured to this shaft is a worm 16 which meshes constantly with some of 85 the rack teeth 10, the lower portion of the builder arm being cut away as at 17 to permit this en' gagement of the worm with the teeth. A brake screw 18 extends into one or the bearings 15 and may be provided with any suitable friction means not shown, for engagement with the shaft liY so as to retard its rotation. f f

A ratchet wheel 19 is secured to one end of the shaft lli and pivotally mounted on this shaft adjacent the ratchet wheel is a lever 20 having a 95 laterally extending lug 21 adapted to work within a yoke 22 extending laterally from one end or the builder arm l. One arm of this yokehas a stop screw 23 mounted therein and this stop screw cooperates with the other arm of the yoke for limting the oscillation o1 the lever. A dog 24 is carried by one end of the lever and engages the periphery of the ratchet wheel 19. Thus when lever 20 is swung inone direction the dog will act to impart a slight rotation to the ratchet wheel 19 whereas, when lever 2O is swung in the opposite direction., the dog will slip over the teeth of the ratchet wheel. A take-up rod 25 is pivotally connected to lever 20, there being a se- 11@ ries of apertures 26 any one of which is designed to receive the pivot pin 27.

An adjustable connection between the takeup rod and lever is provided in the manner just described. The upper portion of the take up rod is screw threaded as shown at 28 for engagement by nuts 29, this rod being mounted in a bracket 30 adapted to be secured to a stationary portion of a spinning frame (not shown).

Pivotally mounted on the slide 9 between the pulley 13 and the axle 2 is a trip lever 31 having an ofset end portion 33 carrying a roller 33. The other end portion of this lever has an arm 34 pivotally connected thereto at 35 and adapted to swing upwardly relative to the lever. Downward swinging movement of the arm, however, will result in the roller 33 and the adjacent end portion of the lever 3l swinging upwardly. The outer or free end of the arm 34 has its bottom portion rounded as shown at 36, this rounded portion coming to a knife edge 37 adapted normally to bear against a stud 38 extending laterally from the builder arm 1 close to the axle 2. Roller 33 is adapted to contact with a small cam 39 having preferably nine regularly spaced points shown at 40 in Figure 2. This small cam is preferably formed of the hub portion of the main cam 41 which, as shown in Figure 2, is formed with three peripheral depressions one of which is rounded,.as indicated at 42 while the others are angular as shown at 43 and 44. The bottoms of all or" these depressions are the same distance, radially, from the axis of rotation of the cam.

Arranged at one side of the builder arm 1 is a block 45 pivotally mounted, as shown at 46 and carrying a cam roller 47 adapted normally to bear against the periphery of the cam 41. justing screw 48 carried by a bracket 49 on the builder arm 1 engages one end of the pivoted block 45 and by means thereof the roller 47 can be adjustedv relative to the periphery of the cam 41.

The structure thus-far described has already been disclosed in my patent herein referred to and has been described again solely for the purpose of aifording a clear understanding of the opera-tion of the improved bobbin former constituting the present invention.

Builder chain 50 such as disclosed in my patent referred to is anchored at one end to the builder arm 1 close to lever 26. This-chain is looped aboutrthe pulley 13 and extends under pulley 12 and thence upwardly over a guide pulley 52 to the bobbin former.

The bobbin former includes a shaft 53. This former consists of two drums 54 and 55 preferably cast integral and secured to the shaft 53 so as to rotate therewith. The drum 54 is circular and has a fork 56 extended radially from its periphery. Drum 55, however, is not circular but is cam shaped as shown particularly in Figure 6, this drum having a portion 57 of its periphery eccentrically arranged and merging through an abrupt curve at 58 into the remaining portion 59 of the periphery of the drum which is eccentrically disposed relative to the axis of rotation and merges at that portion 60 nearest said axis into the arcuate portion 57.

The builder chain 50 is attached to the drum 54 by a screw 61 or the like extending through an end lug 62 into theperiphery of the drum 54.

A chain 63 is extended from the drum 55-and is secured at one end to the periphery thereof as shown at 64, this vchain being extended oppositely to the-chain-50as clearly indicated in Figures 4 to 6 inclusive. AChain 63 leads to the ring rail (not shown) of the spinning frame. Thus as chain 56 moves to the left through the unwinding of the traverse, it is wound upon the drum 54 while chain 63 is at the same time unwound from drum 55.

An annularly adjustable plate 65 is mounted on the shaft 53 and has a slot 66 which is concentric with shaft 53. A clamping screw 67 extends through the slot into the drum 54. A lug 68 extends laterally from plate 65 and laps the periphery of drum 54. Obviously by loosening screw 67 the lug 68 can be adjusted at any desired point on the periphery of the drum 54 after which it can be secured by tightening screw 67.

The parts are shown in Figures 1 and 4 in the positions they occupy when the traverse is wound and the spinning frame is ready to start iilling its bobbins. At this time the chain 50 is held away from the periphery of drum 54 by the fork 56 and the chain 63 extends tangentially from the arcuate portion 57.

When the machine is operating the lever arm or extension 34 is in contact with the stud 38 and the roller 33 is in rolling contact with the small cam 39, as shown for example in Figure 2. The parts are so proportioned that when the roller 33 is thus located, the roller 47 will be clear of the cam 41. As the cam 39 rotates it imparts an oscillating motion to the arm 1 of the builder, this builder arm swinging about the axis of the axle 2, such movement transmitting a very short stroke to the ring rail (not shown) of the spinning frame and at the same time causing the dog 24 to impart an intermittent rotation in a clockwise direction to the ratchet wheel 19 and the shaft 14. This short stroke action set up by the cam 39 continues long enough to cause the yarn to be formed on the base of the quill as shown by full lines at a in Figure 10, and as hereinafter more fully explained.' The rotation of the worm 16 with the shaft 14 will cause the slide 9 to feed longitudinallyfcarrying the lever 31 with it until finally the free end of the extension arm 34 will slip from under the stud 38 and allow the roller 33 to drop out of contact with the cam 39 against which it has been held by the weight 4 and the pull of the chain 50. Following this action the roller 47 comes against the periphery of the cam 41 so that, instead of the short stroke set up by the cooperation of cam 39 and roller 33, a full stroke will be imparted to the ring rail due to the cooperation of cam 41 with roller 47. vThe worm 16 continues to shift the slide 9 and the rack teeth 10 as long as the builder arm oscillates, and during this movement the pulley 13 moves toward the pulley 12 so that the chain 50 is gradually paid out. As this chain isV thus paid out the ring rail (not shown) will gradually rise until the bobbins are iilled to the desired height.

By providing a bobbin former such as shown for example in Figure 1 the full stroke of the bunch builder is prevented from being transferred to the ring rail while the lower portion of the bobbin is being wound. Although the movement of chain 50 to the left during the unwinding of the traverse'results in the unwinding of the chain 63 and the oscillating motion of chain 50 is transmitted to chain 63, these oscillations are reduced in extent during such transmission because of the fact that chain 50 is supported byfork 56 away from the periphery of drum 54 a. distance greater than that between chain 63 and the shaft 53. It will be obvious, however, that these oscillations of chain 63 will be rapidly increased in extent as the drums rotate in a counterclockwise direction and the distance between chain and the periphery of drum 54 is reduced. In other Words, the leverage exerted through the drum by chain 50 is reduced as the drum rotates to the left. The increased reciprocation of chain 63 continues until it equals that of chain 5i), this of course occurring when the two chains reach points on the peripheries of the two drums where they are equidistant from shaft 53. At this time the full stroke of the bobbin former is imparted to the ring rail to which chain 63 is attached. Subsequently, during the further paying out of chain 50 and the counterclockwise rotation of the drums, the stroke of the ring rail becomes shorter because of the eccentricity of the drum which allows chain 63 to move slowly toward the axis of rotation of the drum. Thus the bobbin is filled gradually deeper and deeper as the ring rail rises and. in so doing is wound to a uniform outside diameter as shown by full lines in Figure l0, instead of to the taper of the emptly quill as shown by dotted lines.

The lug 68 is made adjustable, as before explained, so as to come into contact with chain 50 when the bobbin is nearly full. This results in shifting chain 50 outwardly from its drum 54 so as to shorten the stroke of chain 63 and the ring rail and cause the bobbin to be nlled out at the 'top in a manner similar to that in which it is lled out by the short strokes during the forming or the bobbin.

Instead of providing one of the drums with a fork 56 it can be made with a solid lug as shown at 69 in Figure 8 or extending under and lifting chain 50. Furthermore, under some conditions, both drums can be eccentrically mounted as shown in Figure 9, one of these drums V70, corresponding with drum 54 having a peripheral lug 71 for thrusting outwardly on the chain 50. This eccentric arrangement of both drums will produce results very similar to those produced by the use of a circular concentric drum and an eccentric arranged as shown in Figures 4 to 8 and provided with chain displacing portions on their peripheries.

What is claimed is:

l. The combination with a flexible element for connection to a ring rail, a bunch builder, and a flexible builder element for actuation by the bunch builder, or" rotatable means interposed between and attached to said elements for transmitting motion therebetween at variable speeds, said means including connected drums to which the respective elements are connected, one of the drums having its peripheryl at different distances from its axis of rotation, and means on the other drum for shifting a portion of its iexible element radially relative to the drum.

2. The combination with a exible element for connection to a ring rail, a bunch builder, and a flexible builder element for actuation by the bunch builder, of rotatable means interposed between and attached to said elements for transmitting motion therebetween at variable speeds, said means including connected drums to which the respective elements are connected, one of the drums having its periphery at different distances from its axis of rotation, and annularly adjustable means on the other drum for shifting a portion of its flexible element radially relative to the axis of rotation of the drums.

3. The combination with a flexible element for connection to a ring rail, a bunch builder, and a iiexible builder element for actuation by the bunch builder, of rotatable means interposed between and attached to said elements for transmitting motion therebetween at variable speeds, said means including connected drumstowhich the respective elements are connected, one of the drums having its periphery at different distances from its axis of rotation, and separatemeans on the other drum for shifting different portions of its flexible element radially relative to the drum successively.

4;. The combination with a flexible element for connection to a ring rail, a bunch builder, and a exible builder element for actuation by the bunch builder, of rotatable means interposed between and attached to said elements for transmitting motion therebetween at variable speeds, said means including connected drums to which the respective elements are connected, one of the drums having its periphery at different distances from its axis of rotation, separate means on the other drum for shifting different portions of its flexible element radially relative to the drum successively, and means for adjusting one of said separate means annularly relative to its drum.

5. The combination with a flexible element for connection to a ring rail, a bunch builder, and a nexible builder element for actuation by the bunch builder, of rotatable means interposed between land attached to said elements for transtion of its exible element radially relative to the drum.

JESSE LEE LYLE. Y 

